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<?php
/**
* XMP Data - Interprete and return XMP data
*
* Zoph is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Zoph is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with Zoph; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* @author Jeroen Roos
* @package Zoph
*/
namespace xmp;
use ArrayAccess;
use Iterator;
use Countable;
/**
* @author Jeroen Roos
* @package Zoph
*/
class data implements ArrayAccess, Iterator, Countable {
private $xmpdata = array();
/**
* Create new xmp/data object
* @param array data to inject
*/
public function __construct(array $data=null) {
$this->xmpdata = $data;
}
public function getRDFDescription(mixed $off) : mixed {
return $this["x:xmpmeta"]["rdf:RDF"]["rdf:Description"][$off];
}
/**
* For ArrayAccess: does the offset exist
* @param mixed offset
* @return bool offset exists
*/
public function offsetExists(mixed $off) : bool {
return (isset($this->xmpdata[$off]));
}
/**
* For ArrayAccess: Get value of parameter
* @param mixed offset
* @return mixed value
*/
public function offsetGet(mixed $off) : mixed {
$data = $this->xmpdata[$off] ?? null;
if (is_array($data)) {
if (sizeof($data) === 0) {
return null;
} else {
return new self($data);
}
} else {
return $data;
}
}
/**
* For ArrayAccess: Set value of parameter
* @param mixed offset
* @param mixed value
*/
public function offsetSet(mixed $off, mixed $val) : void {
$this->xmpdata[$off] = $val;
}
/**
* For ArrayAccess: Unset value of parameter
* @param mixed offset
*/
public function offsetUnset(mixed $off) : void {
if (isset($this->xmpdata[$off])) {
unset($this->xmpdata[$off]);
}
}
/**
* For ObjectAccess: Get value of parameter
* @param mixed offset
* @return mixed value
*/
public function __get(mixed $off) : mixed {
return $this->offsetGet($off);
}
/**
* For Iterator access - rewind to begining
*/
public function rewind() : void {
reset($this->xmpdata);
}
/**
* For Iterator access - get current
* @return mixed current entry
*/
public function current() : mixed {
return current($this->xmpdata);
}
/**
* For Iterator access - get key of current entry
* @return mixed current key
*/
public function key() : mixed {
return key($this->xmpdata);
}
/**
* For Iterator access - move to next entry
*/
public function next() : void {
next($this->xmpdata);
}
/**
* For Iterator access - is the current entry valid
* @return bool valid
*/
public function valid() : bool {
return key($this->xmpdata) !== null;
}
/**
* For Countable access - get size of data
*/
public function count() : int {
return count($this->xmpdata);
}
}
?>
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